CN211820626U

CN211820626U - Limit structure suitable for differential mechanism planetary gear axle

Info

Publication number: CN211820626U
Application number: CN202020424520.6U
Authority: CN
Inventors: 丁海浩; 杨斌
Original assignee: Zhejiang Yutian New Energy Technology Co ltd
Current assignee: Zhejiang Yutian New Energy Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-10-30
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a limit structure suitable for differential mechanism planetary gear axle relates to differential mechanism technical field, and its technical scheme main points are: including the differential mechanism casing, the planetary gear axle, the differential mechanism casing includes first half casing and second half casing, the inner wall of differential mechanism casing is provided with two relative mounting grooves, the mounting groove is located the junction of first half casing and second half casing, the planetary gear axle is located differential mechanism casing inside and can imbed to two mounting grooves, two terminal surfaces of planetary gear axle respectively with the bottom surface counterbalance of two mounting grooves lean on, the mounting groove comprises spacing groove one and spacing groove two, spacing groove one carries out the axial spacing with spacing groove two jointly to the planetary gear axle, first half casing all outwards extends with lower half casing has the step, be provided with the master gear between the step, the step is provided with bolted connection with the master gear, the planetary gear axle is located differential mechanism casing inside, simple installation and convenient and stability is stronger, factor of safety is high.

Description

Limit structure suitable for differential mechanism planetary gear axle

Technical Field

The utility model relates to a differential mechanism technical field, in particular to limit structure suitable for differential mechanism planetary gear axle.

Background

The automobile differential mainly comprises a left half axle gear, a right half axle gear, two planet gears, a differential shell and a planet gear shaft. In the differential assembly, the planet gear shaft is axially positioned by a cylindrical fixing pin, and the fixing pin can limit the axial movement of the planet gear shaft after being driven into the pin hole. When the differential mechanism carries out circular motion, the planet gear can be sheared and broken off and break away from the differential mechanism shell under the influence of shearing force because of the influence of centrifugal force, and the locating pin that breaks away from can break the gear or block at the gear, security when influence user uses.

Chinese patent No. CN 203023425U discloses a limiting mechanism of a differential planetary gear shaft, a differential and a vehicle. The utility model discloses a stop gear of differential mechanism planetary gear axle, including differential mechanism casing, differential mechanism side gear, planetary gear, wherein, planetary gear axle's first end tip stretches out differential mechanism casing is outside to be formed with first hoop recess on the outer peripheral face of this first end tip, install in this first hoop recess and be used for the restriction planetary gear axle's axial displacement's spacing snap ring. Because spacing snap ring is the block on the annular recess, so can realize reliable effectual installation. Meanwhile, a larger effective anti-shearing area is provided, so that axial limiting is more reliable. And the planet gear shaft axially positioned by utilizing the limiting mechanism can rotate in the differential case, so that the phenomenon that after the gluing is carried out, the stress is concentrated on the limiting mechanism of the planet gear shaft, and the limiting mechanism of the planet gear shaft is damaged, so that the accidents that the differential case fails due to the play of the planet gear shaft and the like are caused is avoided.

The technical scheme has the following defects: in differential mechanism high-speed rotation, differential mechanism is great to the shearing force and the torque ratio of snap ring, and along with long-time work, the snap ring can break down, and planet gear shaft both ends all extend to the outside of differential mechanism casing, and the shearing force that the part that planet gear shaft and differential mechanism casing contact received can increase, thereby can produce great wearing and tearing in the use and lead to planet gear shaft life to shorten, endanger driving safety.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a limit structure suitable for differential mechanism planetary gear axle, it has the structure simply, and stability is high, difficult cracked advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a limit structure suitable for differential mechanism planet gear axle, characterized by: including differential mechanism casing, planetary gear axle, differential mechanism casing includes first half casing and latter half casing, differential mechanism casing's inner wall is provided with two relative mounting grooves, the mounting groove is located first half casing with the junction of latter half casing, planetary gear axle is located differential mechanism casing is inside and can be embedded into to two the mounting groove, two terminal surfaces of planetary gear axle respectively with the bottom surface counterbalance of two mounting grooves is leaned on.

Through above-mentioned technical scheme, differential mechanism casing comprises upper and lower two parts casing, and the planet gear shaft sets up inside differential mechanism casing, is fixed in among the mounting groove, and the shearing force that the planet gear shaft received in the use mainly acts on the junction with the mounting groove, and planet gear shaft terminal surface supports with the mounting groove bottom surface and leans on, and the condition that drops or planet gear shaft fracture etc. lead to the incident when can not producing the use, and the installation is also comparatively simple and convenient.

Preferably, the mounting groove comprises a first limiting groove and a second limiting groove, the first limiting groove is arranged on the inner wall of the upper half shell, and the second limiting groove is arranged on the inner wall of the lower half shell.

Through the technical scheme, the mounting groove is divided into the first limiting groove and the second limiting groove, and the first limiting groove and the second limiting groove limit the planet gear shaft together.

Preferably, the shape and size of the first limit groove and the second limit groove are consistent and are uniformly distributed on two sides of the joint.

Through the technical scheme, the first limiting groove and the second limiting groove are consistent in shape and size, so that the planetary gear shaft can be clamped into one limiting groove at will and then the other limiting groove is placed when the planetary gear shaft is installed, and the planetary gear shaft is convenient to install.

Preferably, the side wall of the planet gear shaft is attached to the side surface of the mounting groove.

Through above-mentioned technical scheme, the lateral wall in planetary gear groove is laminated with the side of mounting groove mutually, can not appear the condition that planetary gear axle striking mounting groove at the installation high-speed operation in-process, improves system stability and security.

Preferably, the outer wall of the upper half casing close to one side of the mounting groove and the outer wall of the lower half casing close to one side of the mounting groove both extend outwards to form steps, and a main gear is arranged between the steps.

Through above-mentioned technical scheme, the outside step that extends of differential mechanism casing can carry out spacingly to the master gear.

Preferably, the main gear is sleeved on the differential housing, and the upper end face and the lower end face of the main gear are attached to the side wall of the step.

Through above-mentioned technical scheme, the laminating of master gear inner wall and differential mechanism casing outer wall, the condition that master gear inner wall striking differential mechanism casing outer wall can not appear in the high-speed operation in-process, terminal surface and step lateral wall laminating about the master gear mutually, the condition that master gear terminal surface striking step lateral wall can not appear in the high-speed operation in-process, improves stability and security.

Preferably, the step and the main gear are provided with bolts for connection and fixation.

Through the technical scheme, the steps are connected with the main gear through the bolts, so that the upper half part shell, the lower half part shell and the main gear can be tightly fixed.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. the internal structure is simple, the stability is strong, and the safety coefficient is high;

2. the planetary gear shaft can not fall off the differential shell due to external force to cause accidents;

3. the whole length of the planet gear shaft is shortened, the shearing resistance is enhanced, and the service life is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a structural sectional view of the embodiment;

FIG. 3 is a schematic view of the upper half of the housing in the embodiment;

fig. 4 is a schematic view of a lower half casing in the embodiment.

Reference numerals: 1. a differential housing; 1a, an upper half shell; 1b, a lower half shell; 2. a planetary gear shaft; 3. mounting grooves; 3a, a first limiting groove; 3b, a second limiting groove; 4. a joint; 5. a step; 6. a main gear; 7. a bolt; 8. a planetary gear; 9. a half shaft gear; 10. and a limiting hole.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a limit structure suitable for differential mechanism planet gear axle, as shown in fig. 1 to 4, including differential mechanism casing 1, planet gear axle 2, differential mechanism casing 1 includes first half casing 1a and second half casing 1b, differential mechanism casing 1's inner wall is provided with two relative mounting grooves 3, mounting groove 3 is located first half casing 1a and second half casing 1 b's junction 4, planet gear axle 2 is located differential mechanism casing 1 inside and can imbed to two mounting grooves 3, two terminal surfaces of planet gear axle 2 respectively with the bottom surface counterbalance of two mounting grooves 3, the lateral wall of planet gear axle 2 is laminated with the side of mounting groove 3 mutually.

Two planet gears 8 and a half axle gear 9 meshed between the two planet gears 8 are arranged in the differential case 1, and the two planet gears 8 are sleeved on the planet gear shaft 2.

The mounting groove 3 comprises a first limiting groove 3a and a second limiting groove 3b, the first limiting groove 3a is arranged on the inner wall of the upper half shell 1a, and the second limiting groove 3b is arranged on the inner wall of the lower half shell 1 b. The first limiting groove 3a and the second limiting groove 3b are consistent in shape and size and are uniformly distributed on two sides of the connecting part 4.

The outer wall of the upper half shell 1a close to the mounting groove 3 and the outer wall of the lower half shell 1b close to the mounting groove 3 both extend outwards to form steps 5, and a main gear 6 is arranged between the steps 5.

The main gear 6 is sleeved on the differential housing 1, and the upper end face and the lower end face of the main gear 6 are attached to the side wall of the step 5.

The step 5 of the upper half casing 1a, the step 5 of the lower half casing 1b and the main gear 6 are all provided with a limiting hole 10, and the upper half casing 1a, the lower half casing 1b and the main gear 6 are integrally fixed through bolts 7.

The installation mode is as follows: firstly, the planet gear 8 is sleeved on the planet gear shaft 2, the half axle gear 9 and the planet gear 8 are meshed and placed inside the lower half shell 1b, the planet gear shaft 2 is placed at the position of the second limiting groove 3b of the lower half shell 1b, then the main gear 6 is sleeved on the outer wall of the lower half shell 1b, the side face of the main gear is attached to the step 5 of the lower half shell 1b, then the first limiting groove 3a of the upper half shell 1a is placed in the attachment with the planet gear shaft 2, and finally the upper half shell 1a, the lower half shell 1b and the step 5 are integrally fixed by using the bolt 7.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a limit structure suitable for differential mechanism planet gear axle, characterized by: including differential casing (1), planetary gear axle (2), differential casing (1) includes first half casing (1a) and lower half casing (1b), the inner wall of differential casing (1) is provided with two relative mounting grooves (3), mounting groove (3) are located first half casing (1a) with junction (4) of lower half casing (1b), planetary gear axle (2) are located inside and can be embedded into two of differential casing (1) mounting groove (3), two terminal surfaces of planetary gear axle (2) respectively with the bottom surface counterbalance of two mounting grooves (3) is leaned on.

2. The limiting structure suitable for the planet gear shaft of the differential mechanism as claimed in claim 1, wherein: the mounting groove (3) comprises a first limiting groove (3a) and a second limiting groove (3b), the first limiting groove (3a) is arranged on the inner wall of the upper half shell (1a), and the second limiting groove (3b) is arranged on the inner wall of the lower half shell (1 b).

3. The limiting structure suitable for the planet gear shaft of the differential gear according to claim 2, wherein: the shape and the size of the first limiting groove (3a) and the second limiting groove (3b) are consistent and are uniformly distributed on two sides of the connecting part (4).

4. The limiting structure suitable for the planet gear shaft of the differential mechanism as claimed in claim 1, wherein: the side wall of the planet gear shaft (2) is attached to the side face of the mounting groove (3).

5. The limiting structure suitable for the planet gear shaft of the differential mechanism as claimed in claim 1, wherein: the outer wall of one side, close to the mounting groove (3), of the upper half shell (1a) and the outer wall of one side, close to the mounting groove (3), of the lower half shell (1b) extend outwards to form steps (5), and a main gear (6) is arranged between the steps (5).

6. The limiting structure suitable for the planet gear shaft of the differential mechanism as claimed in claim 5, wherein: the main gear (6) is sleeved on the differential shell (1) and the upper end face and the lower end face of the main gear (6) are attached to the side wall of the step (5).

7. The limiting structure suitable for the planet gear shaft of the differential mechanism as claimed in claim 5, wherein: bolts are arranged between the step (5) and the main gear (6) for connection and fixation (7).